OTHER ORGANS OF DIGESTION. 63 



a. What is its use ? 



b. What do you find in it ? 



c. Has it any connection with the peritoneum, or lining 

 of the abdominal cavity? 



XIII. THE ENTIRE ALIMENTARY CANAL. 



Remove the entire alimentary canal and straighten it 

 out on the table. 



a. Measure the various parts. 



b. How do they compare one with another? 



c. How do they compare with the length of the body 

 cavities? - 



d. Sketch. 



C. A Detailed Study of the Different Organs. 



Material. A dissected rabbit. 

 Apparatus. A magnifying glass. 



With the scissors make a small cut in the walls of the 

 oesophagus, the stomach, the small and large intestines. 

 Wash out the contents. 



Study : 



I. THE WALL OF THE (ESOPHAGUS. 



a. The muscular coat on the outside. 



b. The mucous lining within. 



II. THE WALL OF THE STOMACH. 



a. The muscular coat on the outside. 



b. The mucous coat. Look with the magnifying glass 

 for shallow pits over the surface of the mucous lining. 

 These contain the openings of the gastric glands that will 



